硅胶-水吸附式冷风机组的设计及性能实验

doi:10.11949/j.issn.0438-1157.20181217

摘要/Abstract

摘要：

吸附式冷风机组无须冷水回路和冷水泵，可满足小型化的应用需求。针对一种由2个吸附床，1个冷凝器和1个热管型的蒸发器的硅胶-水吸附式冷风机进行了实验研究，确定了机组的动态运行特性，探讨了热源温度、冷却水进口温度和冷风出口温度对系统性能的影响。实验结果表明，机组能够有效利用60～90℃范围内的低温热源，可提供0.84～2.29 kW的制冷量，系统的COP在0.26～0.43之间。

关键词: 吸附, 硅胶-水, 冷风机, 设计, 解吸

Abstract:

The adsorption air cooler does not require the cooling water circuit and the cooling water pump, so it can meet the needs of miniaturized applications. In this paper, a silica gel-water adsorption air cooler was experimentally studied, which consists of two adsorbers, one condenser and one heat pipe type evaporator. The dynamic operating characteristics of the cooler were obtained. This paper discusses the influence of heat source temperature, cooling water inlet temperature and cold air outlet temperature on system performance. The experimental results show that the cooler can be effectively driven by low-grade heat source at 60—90℃. The cooling capacity of 0.84—2.29 kW and the corresponding COPs of 0.26—0.43 were achieved.

Key words: adsorption, silica gel-water, air cooler, design, desorption

中图分类号:

TB 651

王红斌, 彭佳杰, 孙海权, 潘权稳, 王如竹, 王海亮, 徐兆宏. 硅胶-水吸附式冷风机组的设计及性能实验[J]. 化工学报, 2019, 70(S1): 186-192.

Hongbin WANG, Jiajie PENG, Haiquan SUN, Quanwen PAN, Ruzhu WANG, Hailiang WANG, Zhaohong XU. Design and experimental study on silica gel-water adsorption air cooler[J]. CIESC Journal, 2019, 70(S1): 186-192.

图/表 12

图1 硅胶-水吸附式冷风机组结构

Fig.1 Schematic diagram of silica gel-water adsorption air cooler

表1 吸附床的尺寸参数

Table 1 Dimension parameters of adsorption bed

参数	数值
翅片长度/mm	254
翅片宽度/mm	56
翅片厚度/mm	0.15
翅片间距/mm	3
翅片段管长/mm	300
换热管外径/mm	Φ9.54
换热管厚度/mm	0.4
换热管间距/mm 水平垂直	25(中心距) 22(中心距)
硅胶颗粒直径/mm	0.5～1.5
硅胶质量/kg	2.8

表2 冷凝器的设计参数

Table 2 Design parameters of condenser

参数	数值
换热管外径/mm	Φ16
换热管长度/mm	1054
流程数	10
换热管厚度/mm	0.7
换热管数量	20

表3 蒸发器的设计参数

Table 3 Design parameters of evaporator

参数	数值
换热管外径/mm	Φ16
换热管长度/mm	800
微槽深度/mm	28
流程数	4
换热管厚度/mm	0.7
微槽宽度/mm	300
换热管数量	44

表4 硅胶-水吸附式冷风机的运行控制

Table 4 Operational control of silica gel-water adsorption air cooler

工作过程	V1	V2	V3	V4	V5	V6	V7	V8
制冷过程1	0	0	0	0	0	0	0	0
预热预冷过程1	1	1	1	1	1	0	0	1
制冷过程2	1	1	1	1	1	1	1	1
预热预冷过程2	0	0	0	0	1	0	0	1

图2 测试系统

Fig.2 Schematic diagram of test system

表5 测量设备和参数

Table 5 Measuring equipment and parameters

名称	规格	精度
温度传感器	A级Pt100	0.15℃
电磁流量计	ZK-LDE-25-PO-4	0.5%
电磁流量计	ICF300F	-15%～10%
温湿度记录仪	TH22R-EX	温度精度±0.1℃, 湿度精度 ±1.5%RH
热线式风速仪	AR866	±3%±0.1dgt

图3 换热流体进出口温度变化曲线

Fig.3 Inlet/outlet temperature profiles of heat transfer fluid

图4 系统性能随热水进口温度的变化

Fig.4 System performance vs temperature of hot water inlet

图5 系统性能随冷却水进口温度的变化

Fig.5 System performance vs temperature of cooling water inlet

图6 系统性能随冷风出口温度的变化

Fig.6 System performance vs temperature of chilled air outlet

表6 实验结果的相对误差

Table 6 Relative errors of experimental results

参数	制冷量	COP
相对误差范围	5.29%～6.89%	8.99%～13.09%

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